I Am Repairing the System in Another World

"So I have traveled through time?" Bai Lan asked excitedly with his eyes wide open. "Yes, I wish you a pleasant journey" the electronic sound of the system sounded in Bai Lan's mind. "Then what do you need me to do?" "The host's only... Mission... Is..." Bah... Bah... Bah... Then, the system that stayed in Bai Lan's mind for less than 5 seconds crashed! In short, this is a story about traveling through the planes with an unreliable system. There are currently two worlds tentatively selected: the end of the world and the Warring States period. Will write about the world in my heart.